Ors to p



(No Model.)

W. S. ROGERS 8u W. C. JONES.

RATGHET DRILL.

No. 401,375. Patented Apr. 16, 1889.

Inventors, h1 A/wd We %LG,

Attorney,

Witnesses mmmk- UNITED ASrirriis PATENT Erica,

Vl/VINFIELD S. ROGERS AND VILLIS C. JONES, OF CINCINNATI, OHIO, ASSIGN- A ORS TO P. G. MARCH, OF SAME PLACE.

RATCH E T-DRI LL.

i SPECIFICATION forming part of Letters Patent No. 401,375, dated April 16, 1889.

Application iletl Septemher10,l888 Serial No. 284,974. (No model.)

To alt whom, it may concern;

Be it known that we, WINFIELD S. ROGERS and VILLIS C. JONES, of Cincinnati, Hamilton county, Ohio, have invented certain new and useful Improvements in Ratchet-Drills, of which the following is a speciiication. l This invention pertains to ratchet drills or Wrenches to be operated through' the medium of an oscillated hand-lever. We have illustrat-ed our improvements in connection with a ratchet-drill designed for use as a railroadtrack drill in connection with a suitable ordinary track-clamp; but our improvements are applicable, of course, to ratchet-drills designed i'or boiler-drilling or for general work.

Our improvements will be readily understood from the following description, taken in connection with the accompanying drawings, in Which- Figure l is a side elevation of a ratchetdrill embodying our improvements, the side here exposed to view being hereinafter designated the left side; Fig. 2, a partial side elevation of the opposite or right side of the device; Fig. 3, an elevation of the front end of the device with the socket and ratchetdisk removed; Fig. i, a plan of the device with portions appearing in horizontal diametrical section, and Fig. 5 a vertical transverse section of the stock and feed-screw.

In the drawings, A indicates the usual socket to receive the shank of a drill; B, a ratchet-disk formed upon or secured thereto, this disk having its teeth arranged upon a bevel-face after the manner of an ordinary bevel-gear except that the teeth are arranged in ratchet form; C, a stock or body having a socket-piece, A, journaled axially in its front end; D, the feed-screw fitted to enter an axial cavity in the rear of the stock, in which cavity the screw is capable of endwise motion but not of rotary motion, the rotary motion being prevented by any appropriate means, as by means of the spline-work illustrated, the rear end of the feed-screw being iitted for engagement with the appropriate part of Whatever form of clamp the implement is to be used in connection with, the illustration showing the screw as provided with a loopbearing to engage the clamp, or the usual clamp-frame employed in connection with railroad-track drills; E, the feed-nut threaded upon the feed-screw, and bearing against the rear-end of the stock and having its periphery provided with ratchet-teeth; F, a pair of oppositely-disposed trunnions carried by the stock near the ratchet-disk B, the axis of these trunnions being at right angles to the axis of rotation of the drill-socket; G, the hand-lever by which the device is operated, this handlever being bifurcated at its lower end, and its bifurcations journaled upon the trunnions F; H, a bevel-segment at the lower end of the left bifurcation of the hand-lever, this segment being formed after the manner of bevel-gearing to correspond with the bevel-ratchet B, and being provided with upwardly-present'- ing ratchet-teeth to engage the teeth of the ratchet-disk B, the segment H and ratchetdisk B thus intermembering like bevel-gearing, except as to the form of the teeth,which, as before said, are ratchet form; J, a similar segment at the foot of the right-hand bifurcation of the hand-l ever, the teeth of this right segment having downwardly-presentin g teeth, in order that they may properly engage the teeth of the disk B; K, the pivot-bearing of the left bifurcation of the hand-lever, forming the engagement with the appropriate trunnion F, this pivot-bearing, however, instead of being circular having a diagonally-disposed slot, whereby the leit foot of the handlever and the segment H are capable of a movement diagonally to and from the face of the ratchet-disk B, thus permitting the segment H to be moved into and out of engagement with the teeth of the ratchet-disk B; L, a similar slot forming the pivot-bearing of the right foot of the hand-lever; M, a shank and socket exemplifying the means for journaling the drill-socket A in the front end of the stock, and N a pawl projecting rearwardly from the hand-lever in position to engage the teeth of the feed-nut E when the hand-lever is properly adjusted.

By inspecting Fig. l it will be seen that the left segment has its teeth in engagement with the teeth of the ratchet-disk B. If the handlever be oscillated rearwardly, movement of rotation will be transmitted to the ratchet- IOO disk B and to the drill-socket in the proper direction for drilling. During this movement of the hand-lever the teeth of the right segment, J ,will be automatically disengaged from the teeth of the ratchet B, as indicated in Fig. 2. Upon the return-stroke of the hand-lever the teeth of the right segment, J, automatically engage the teeth of the ratchet-disk, the teeth of the left segment, H, immediately disengaging, and movement of rotation in a proper direction for drilling will again become transmitted to the ratchet-disk and drill-socket. By this means the movement of the hand-lever in each direction is caused to give rotation in a single direction to the drill-socket, and the oscillating motion of the hand-lever becomes converted into a practically continuous rotation of the drill-socket. The engagement and disengagement of the segment-teeth are accompanied by a slight twisting motion of the lever G, which motion is, however, automatic.

The rotation of the feed-nut E, in an 0bvious manner, causes the forward feed of the drill. When the hand-lever -is depressed far enough, the pawl N engages the teeth of the feed-nut and gives that nut a partial rotation and produces the feeding movement. The rate of feed is under the control of the operator, who may depress the hand-lever so far at each of its downward movements as to produce a feeding movement, or he may carry the depression of the hand-lever to this extent on occasions only, as called for by the requirements of feed. In setting the drill to its work and in restoring the feed-screw to its short position, the nut E is free to be turned by the fingers, being normally free from engagement with the pawl N.

We claim as our invention- 1. In mechanism to be given movement of rotation through the medium of an oscillating lever, the combination, substantially as set forth, of a rotatory disk having a bevelface provided with ratchet-form teeth, a pair of trunnions or pivots arranged with their axes in the plane of and at right angles to the axis of rotation of said disk, a bifurcated 1ever fitted to oscillate on said pivots and engage the same by diagonally-slotted pivotbearings, and segments at the pivot portions of said lever provided with ratchet-form teeth adapted to engage the teeth of said disk upon opposite sides of its axis.

2. In a ratchet-drill, the combination, substantially as set forth, of stock C, provided With trunnions F, drill-socket A, journaled axially in the front end thereof, bevel-diskB upon the drill-socket and provided upon its bevel-face with ratchet-form teeth, bifurcated hand-lever G, engaging said trunnions by slotbearings K and L, and segments H and J upon said hand -lever and provided with ratchet-form teeth adapted to engage the teeth of disk B.

8. In a ratchet-drill, the combination, sub stantially as set forth, of a stock, a drillsocket journaled axially therein,ahand-lever connected with said stock by a pivot of oscillation having its axis at right angles to the axis of said stock, means for transmitting motion from said hand-lever to said drill-socket, a pawl proj ecting from said hand-lever in the direction of its motion of oscillation, and feed mechanism connected with said stock and provided with a feed-ratchet arranged with its axis coincident with the axis of the stock and lin position to 4have its teethengaged by said 

